A truck traveled 205 miles in 312 hours. The distance is the product of the rate and the time.

To the nearest tenth, what is the average speed of the delivery truck?

Enter your answer in the box.

miles per hour

is should be y = 5x

step-by-step explanation:

correct me if im wrong

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

answer: 12   they all have at least 28 days

step-by-step explanation: haha